225381709 has 8 divisors (see below), whose sum is σ = 257725440. Its totient is φ = 193074576.

The previous prime is 225381703. The next prime is 225381727. The reversal of 225381709 is 907183522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225381709 - 2¹⁷ = 225250637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225381703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5652 + ... + 21970.

It is an arithmetic number, because the mean of its divisors is an integer number (32215680).

Almost surely, 2^225381709 is an apocalyptic number.

It is an amenable number.

225381709 is a deficient number, since it is larger than the sum of its proper divisors (32343731).

225381709 is a wasteful number, since it uses less digits than its factorization.

225381709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18299.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 225381709 is about 15012.7182415444. The cubic root of 225381709 is about 608.5639506102.

The spelling of 225381709 in words is "two hundred twenty-five million, three hundred eighty-one thousand, seven hundred nine".